Metal-mold.



. ammi C. W. TARBET.

METAL MOLD APPLlcAT|oNf|Ln FEB. 9.1911,

Patented Apr.. 30, 19M.

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CLARENGEWTARBET, `OF CHlCAGnO,r ILLINOIS.

METAL-MOLD. i:-

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Specification of Letters Patent.

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Application led-Eebriiary, 19N. Serial Nc.i14c7,5891.

To all 'whom it may concern# Be it known tliatl, iCLARiiNCn W.'lliiin'ig a citizen ioif. .the i UnitedStates, residing .at

tive discharge of a nietal casting therefrom` as a result of opening theinold. i Totliis end, iny invention consists; in. the combinationf ofeleinentsy hereinafter :more `particular-ly de-` scribedV anddefinitelypointed` out in `the clainis..

ln the sdraiwings, i

Figure l, isa front elevation of a inodel einbodyingtlie features of.inyfinventioin i Fig. 2, is a vertical sectiontakeniipon the i line 2-,Fig. 1, .viewed `in the direction of the arrowthere shwnf Fig. 3, is asectionrinplan taken uponthe.

line `3-, Fig. .2, andt Fig.` d, is a vertical sectionitaken upon thelinea- Fig, .Viewed as indicated bythe arrow there shown.

Referring to i. the drawings `1 indicates what inay be termedthepiiiniary or stationn ary ineniber oic a inetal mold,coi-respending.l

to what is ordinarily termed thev drag, and 2 the ifcope7 orV inovableineinber. i A matrix 3, Figs.-2, 3 and 4L, is formed in thepartl whileits counterpartiec is provided inhthe part l2. ln the example`illustrated, the.

inatrix is adapted lor thepurpose of casting an. ordinary sash-weight. l

Tapped intothe part 1, as shown at 5, Fig 8, or otherwiserigidlyfattacheduthereto, arev studs or clamping arms 6,16, which arearranged parallel to each foth'er and extended -1 at right: .angles`from the 4inner I"face ofsaid nieiiiberfil Said studs -s are iilooselyfpassed through-boresin the -Ineniber 2 and` are of a length to enablethem to extend considerably beyoiid.the4 outer `faceof'said ineinberwhen the rnoldis closed, as shown, the projecting portions beingprovided with racks/ upon their under faces. A rock-shaftS, 4is arrangedhorizontally beneath the `studs '6 and journaled in bearings formed inbrackets 9,

cast'L upon vor 'rigidly?attached-tothe outerH faceof the part 2. Keyed`to said rocksl1aft are piiiions 10, the teeth of which are adapted to'engage the i racks 7. An operating lever or handle `1l, is rigidlyattached tof said rock-` slia'lft and `profe 1ablyso adjusted that whenyin a depending` position, asshoivn, the inold` l will be' closed nareversal of its position serving` to separate the parts of the inoldwith a f positive action;

The following described inea-ns is provided for positively ejectingrthecastingv 'roiniithe' inold should it tend to stick tothe face there# of,which is liable to occur .with inetalniolds,

especially if allowed `to become overheatcd.

Extendingthrough bothl parts of the inold at right anglesitoV the planeof the `ineeting line, viz., line .a, Fig. 3, is airopeningor passa-ge,

preferably in the forni of a bore l2, a portion i of which,intercepts-the bore or cavity for-niing the inatiix of the anold,-inwhich -is shown a casting 13. y

Enlarged portions or boresll and15\ are i extended inwardly roin theouter faces ofV the inold nieinbersrespectively 13o-points substantiallyequi-distant from the meeting line,-`

An ejector,consistingr in the example illustrated, of a bolt-likeineinber 16,1adaptedto fit looselyibut accurately in the bore 12,is ofshorter length than the distance between the outer facesof the inoldsand'is provided with heads 117 and 18 adapted toloosely entertheenlarged spaces lll and `l5 respectively so as to contactrivithshoulders19 and 2O at'the respective inner ends of saidienlarged spaces whenfthe! mold members are separated.I A 'l splinei2l;adapte-d to slide in awell `known way in a groove, not shown, formed fin the bore la,Vservesto preventy rotation of the egector 161 Adgustablelstops`consisting of :screw plugs 122, 23, tlieflatter` ofwhich' is w shown inFie. l are taooed into the outer i ends of the bores 14 and15,7as'shownfinFio. 3, saidialuO's fliavinc'l bores21l "thereinl toIaro-f l t: b

vide for their Amanipulation andi adjustment by `ineans ol aspanneiwrench. A portion 25 is -cutaway from: the body of -tlie ejector,

said oitioniiorinino'a )art of tliefinatriXd-or i each-:counterpart olthevinold ln `the eX- Hainpleshown, it is inerely a curved cut,tlie

curve of which coincides iviththat ofi the y Wall` of theiinatrixf.-Theplugs22iand 23am so.- adj usted that Li'vhenl the Iinoldinneinberslare i in contact,` saidplugsvwill be, in contact with f the ends of theejector 16, latwhich tinie the curve or cut-away `portion 25 should bein eX- act lregistration' with*v the matrix, of which',

as stated, it forms a part. Metal can then be poured into the mold and acastingmade therein the same as in any metal mold.

When it is desired to eject the casting, the lever 11 is moved to areverse position from that shown in Fig. 2 thereby forcing the moldmembers apart.

Assuming, in the operation, the metal to have been stuck to the matrixwall of the member 2, as the members are separated, the casting 13 andejector 16 will be caused to move with the part 2 away from the part 1until the head 17 is in contact with the shoulder 19 when the furthermovement of the lever 11 will cause that part of the cut-away portion ofthe ejector upon the side of the member 2 to press against the castingand force it out of the mold. Should, however, the casting stick to part1 of the mold, the ejector will remain stationary with said part 1 untilthe shoulder 2O of the part 2 is in contact with the head 18, when afurther movement will cause the cut-away portion of the ejector to forcethe casting away from contact with the part 1. It is immaterial whetherthe casting be stuck to one or both faces of the mold the ejector willact to effectively discharge it therefrom.

I do not wish to be limited to the construction shown inasmuch as it maybe varied without departing from the principle involved.

Having thus described my invention, I claim:

1.` A mold for casting metal, comprising in combination, separablecounterpart mold members, an ejector forming, when in a normal positiona portion of the matrix of each mold member, said ejector being looselybut positively connected with each of said members to permit a limitedmovement of the mold members in opposite directions in relation to saidejector, whereby, when the mold members are separated, the ejector maybe forcibly drawn from each to cause the ejection of a castingtherefrom.

2. A mold for casting metal, comprising, in combination, separablecounterpart mold members, an ejector forming, when in a normal position,a portion of the matrix of each mold-member, said ejector havingportions extending in opposite directions, one portion being slidablyconnected with one and the other with the other of said mold-members,stops for limiting the degree of separation of said mold members, andmeans for holding the inner faces of said ejector in registration withthose of said mold members when the latter are closed.

3. A mold for casting metal, comprising, in combination, separablecounterpart mold members, means for forcibly separating the same, anejector forming, when in a normal @epica 9,1? til-11,5 Pastset may beobtained fer ve cents each, by addressing the Commissioner of latentsposition, a portion of the matrix of each member and means forpositively connecting said ejector with the body of each member withsuiiicient lost motion in the connecting means to permit a partialseparation of said vmembers without actuating said ejector after which afurther movement may cause the same to be forced away from the innerface of each mold member to cause the ejection of a casting therefrom.

4. A mold for casting metal, comprising, in combination, separablecounterpart mold members, an ejector forming, when in a nor-y malposition, a portion. of the matrix of each member, means for positivelyconnecting said ejector with the body of each member with sufficientlost motion in the connection to permit a predetermined separation ofsaid members before said ejector is actuated to discharge a casting,means in operative connection with said members for moving andmaintaining said ejector in a normal position and means for forciblyseparating said members.

5. A mold for casting metal, comprising', in combination, separablecounterpart movable means forming` when in a normal position, a portionof the matrix of each member, means for connecting` said movable meanswith each member of the mold while providing for play in each to causesaid movable means to be moved from its normal position when the partsof the mold are separated whereby, when said parts are separated, aportion of said movable means may first be moved from the matrix of onepart of the mold and upon further separation the counterpart portion ofsaid movable means may be moved away from the matrix of the other partof said mold.

6. A mold for casting metal, comprising, in combination, separablecounterpart members, movable means, forming, when in a normal position,a portion of the matrix of each member, means for holding said movablemeans in a normal position in registration with the matrix, means forconnecting said movable means with each mold member while providing forplay to enable a portion of said movable means to be successively movedfrom the matrix of one part of the mold with a given degree ofseparation of said parts, and then from the other when the separation iscompleted.

In testimony whereof, I have signed this specification in the presenceof two subscribing7witnesses, this seventh day of February, 191

CLARENCE W. TARBET.

Witnesses DAVID II. FLETCHER, JENNIE L. FIsKn.

Washington, LD. FQ,

